Acacia

You can also play with a virtual lens, which shows you the depth of field and some other things according to the focal length, f-stop number and distance from the object etc... There is also a very nice viewfinder with compas.

beeCam Light Meter

Photo Tools

Photo Tools offers more than you can imagine. Many photo calculators (depth of field, hyperfocal distance, field of view, exposure reciprocation, blue and golden hour etc ...), EXIF reader and image histogram viewer, graycard and color wheel, timer and stopwatch, grid overlay camera or notepad, it also gives you information about location and weather etc...

I see the Check Lists as a very interesting and useful tool. You can create and save your own check lists or use some presets, e.g. "standard shoot", "pre shoot" and "wedding shoot". It is something like a ToDo list - you simply have to check all items from the list and you know you have not forgotten anything. You just can't forget the check list :)

Instagram

Almost everyone knows Instagram, perhaps the most popular mobile photo sharing application. Originally an iPhone application, now also for Android.

For those who don't know: Instagram is closely connected with Facebook and its users simply and instantly share their photographs together with location and some description to their friends. That's all, folks :)

Instagram has inspired tons of similar applications, read bellow about one of them ...

EyeEm

EyeEm comes from Berlin and it is a new photo sharing application inspired by Instagram.

New, but very interesting and quickly growing.

Works with any picture size ratio (unlike Instagram, which works only with square format) and it seems it works better with data. EyeEm has more sharing options, has its own website (not only Facebook), works better with locations, keywords etc...